• Ntugomba guhangayikishwa no gukuraho umwanda nudukoko duto muri pisine yawe.Umutwe wa Vacuum wakozwe mubintu biramba kandi bikomeye, bigatuma byoroha cyane, biramba cyane, kandi bikarwanya guhangana nubwoko bwose bwimiti ya pisine, kugirango bikwizeze inyungu ndende kumutwe wucyu.